The WO3/WS2 nanostructures: Preparation, characterization and optical absorption properties

•The WO3/WS2 nanostructures were successfully prepared using a two-step hydrothermal/gas phase method.•The WO3/WS2 nanostructures obtained were coexistence of WO3 and WS2 in the same particle.•The WO3/WS2 nanostructures showed excellent UV–visible optical absorption properties.•The WO3/WS2 nanostructures may have a potential application as an UV–visible photocatalyst.

The WO3/WS2 nanostructures were successfully prepared using a two-step hydrothermal/gas phase method. The physical properties of the nanostructures were characterized using XRD, SEM, TEM, UV–visible spectroscopy. The WO3/WS2 nanostructures obtained were coexistence of WO3 and WS2 in the same particle. The WO3/WS2 nanostructures contained a wide and intensive absorption in the UV–visible light region of 245–750 nm, which showed that the WO3/WS2 nanostructures may have a potential application as an UV–visible photocatalyst.

Graphical abstractExperimental study on the morphologies and the UV–visible absorption of WO3/WS2 nanostructures synthesized in H2S/H2 atmosphere by calcining a WO3·0.5H2O, and its photocatalytic reaction mechanism were presented in current work.Figure optionsDownload full-size imageDownload as PowerPoint slide